package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;
    @Qualifier("redisTemplate")
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * redis根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {

        //构造redis中的key
        String key = "dish_" + categoryId;

        //查询redis中是否存在菜品数据
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(list != null && list.size()>0){
            return Result.success(list);  //如果存在就直接返回，无需查询数据库
        }

        //不满足以上条件的就去查数据库
        Dish dish = new Dish();  //创建一个 Dish 对象作为查询条件
        dish.setCategoryId(categoryId);  //设置分类 ID 和状态（启用中的菜品）
        dish.setStatus(StatusConstant.ENABLE);

        list = dishService.listWithFlavor(dish);  //这些参数会被传给 Service 层进行数据库查询
        redisTemplate.opsForValue().set(key, list);  //把刚刚查出来的菜品列表保存到 Redis 中

        return Result.success(list);
    }



}
